Design and demonstration of ultra-compact microcell concentrating photovoltaics for space Ruud, Christian J. ; Grede, Alex J. ; Chang, Jan-Kai ; Lumb, Matthew P. ; Schmieder, Kenneth J. ; Fisher, Brent ; Rogers, John A. ; Gordon, Jeffrey M. ; Giebink, Noel C. Abstract Publication: Optics Express Pub Date: September 2019 DOI: 10.1364/OE.27.0A1467 Bibcode: 2019OExpr..27A1467R